№4 Python code

Python Code:

n = 4
d = n*2
for i in range(1,4):
    d = d + 2*i
print (d)

Predicted Output:

1. Initial: n = 4, d = 4 * 2 = 8
2. i = 1: d = 8 + 2 * 1 = 10
3. i = 2: d = 10 + 2 * 2 = 14
4. i = 3: d = 14 + 2 * 3 = 20

Answer: 20